What has been your experiences with wildlife on base?

I have two:
1. Once I had my company out doing night land nav. The Company Commander and I accompanied a couple of our youngest troops - we were in groups of four as our supply of NVGs was inadequate for everyone to have a set.
The captain was NOT an outdoor cat. He was nervously making small talk about the wildlife on Camp Ripley, asking what was out there. I informed him (truthfully) that there were possums, raccoons... bears... "Bears!" he says. "Well they stay away from people, right?" "Actually sir, I just saw one this morning by the A Range complex. There are also two packs of wolves..." "No there isn't. You're pulling my leg..."
Right on cue, the howls start. I couldn't see him in the dark, but I think the man turned white as a sheet. Voice trembling a bit, he tried to reassure himself, saying "well, we'd hear them coming, right?" Smelling blood in the water, I said something like "you'd probably hear their panting and feel their hot breath right before they clamed down on your throat."
CPT B didn't want to talk much more after that. The two PFCs on point probably got a good chuckle out of the deal.

2. I went to Alaska to work on a road construction project back in 2001. When on down time, I indulged my love of fishing. The Humpback Salmon were running, and with minimal effort you could catch dozens in an hour. We ate like kings.
One day, I was down in my favored spot just below a waterfall where the fish would spawn. It was at the bottom of a ravine, and you had to traverse a bunch of muskeg (a kind of peat that is spongy and darn near bottomless as the vegetable matter never decomposes in the 40 degree wetness) to get there. I had a five gallon bucket about half full with the day's catch when I heard a noise that halted me in my tracks. Looking up from my task and separated by a mere 3 meters of creek, was the biggest damn Brown Bear I have ever seen. It was looking at me intently - too intently. Thinking fast, I tossed it a fish and was going to extort my buddy to retreat up the ravine... he was already well on his way.
Thanks buddy.
I slowly backed out up the incline and once far enough away, beat feet to the road meeting my buddy at the trailhead. He made supportive words about thinking I was right behind him... Whatever.

After a time, we went back down to recover our bucket and tackle. The bear had crushed the pail and consumed all its contents, of course. But at least we could go fishing again.

Coyote on Ft. Irwin, California.

Alaska was crazy! If it can kill you, it was on post. There are pictures at McDonald's of a moose sticking his head through the drive thru window and them feeding him lettuce. That place is truly the great outdoors!